Re: [Origami] Systematization attempt of Origami Art
>>> Will it be correct to say that there is a whole category 3D polyhedral surfaces, and it can appreciate different unique methods: Tachi's method, Chit's method and others. If it is so, what name would you give this > whole category? I really liked those criterions, with them Matthew described the Tachi's method. Is it possible to define the criteria for the whole category? I would categorise Tachi's method as a way of folding a closed polyhedral surface. As I've mentioned, there are other ways. Adopting a strictly geometrical approach, there are basically the following forms: 1. 2D or flat folding - The model is first folded flat and takes the form of a silhouette. Folds may be later added to make it 3D. 2. Straight crease 3D - The model can be closed polyhedral or open polyhedral. The Gauss dome or saddle surface are non-developable, but a closed polyhedral surface with increasing number of facets is close to it. An open surface is where the folds or creases define the model. 3. Curved cease 3D - Either on their own or together with straight creases, they are used to create curved surfaces to simulate the Gauss curved surfaces. Also, there are closed and open forms. Where do tessellation, corrugation, pleating. paper crushing, and even flat folding techniques come in? They are used to create the model form or add features to it. For example, Lang's carp in Origami Design Secrets is flat folded. Tessellation provides the feature of the carp's scales. By varying the size of the individual scales, you can give the carp a 3D rounded shape. See also my arowana at: http://www.flickr.com/photos/chengchit/920490412/in/photostream The above are my personal opinions and are presented purely for discussion. Cheng Chit
Re: [Origami] Systematization attempt of Origami Art
Many thanks to everyone, who has given attention to my article. Special thanks to all, those, who shared with their thoughts on the proposed systematization. I apologize in advance, if my questions seem silly or those that were already answered. I do not know English much and certain sensitive technologies of origami. I'm afraid there is a coincidence. :) On Sun, 02 Dec 2012 01:45, Leong Cheng Chit wrote: >>>Besides Tachi's method, there are other ways of folding closed polyhedral models. On Tue, 04 Dec 2012 at 09:45, Matthew Gardiner wrote: >>>I think Cheng Chit is correct in saying there are other methods for 3D polyhedral surfaces, however for Oksana's purpose of creating a system of origami styles, I would argue there is no other style equivalent to Tachi's, it is very distinct. > >>>Though the argument is clear that Tachi's Origami does not define a whole category of origami, rather it is a unique branch in the system. 1. Will it be correct to say that there is a whole category 3D polyhedral surfaces, and it can appreciate different unique methods: Tachi's method, Chit's method and others. If it is so, what name would you give this whole category? I really liked those criterions, with them Matthew described the Tachi's method. Is it possible to define the criteria for the whole category? 2. Or other statement is correct. Tachi's method is a separate part in the system. In future, it has the potential to expand and one day may become a whole category, on level with Origami Tessellations, Origami Corrugations and others. If it is so, how is Tachi's method related to 3D polyhedral surfaces. And where is the place of Chit's method in the system? - On Tue, 04 Dec 2012 06:19, Leong Cheng Chit wrote: >>> Of course, all 3D models, closed or open surfaces, with straight creases can be flattened, without destructing their basic folding structures. Models with intrinsic curved crease, on the other hand, cannot be flattened without destructing their basic folding structures. 1. Will it be correct to say that Curvilinear origami is not a separate category of origami. And all (or only some) of the categories of origami can be divided within itself on those which use the straight creases and those use curved creases. If it is so, for what categories except 3D polyhedral surfaces is it possible? - Thank you in advance all , who will answer. These ideas will be very helpful for me in the future adjustment process of systematization origami. For my part, I pledge to refer to this discussion in adjusting the system. I am always open to any suggestions and thankful in advance for any help. Oksana Chorna
Re: [Origami] Systematization attempt of Origami Art
Winniw Leung wrote: Leong Cheng Chit also has quite a few curved > tension models on his flickr site. > http://www.flickr.com/photos/chengchit/920470628/in/photostream >>> Leong Cheng Chit wrote: That was an early attempt of mine to categorise the >>> folds for curved surfaces. ... Understood. Thanks, Hank
Re: [Origami] Systematization attempt of Origami Art
Winniw Leung wrote: Leong Cheng Chit also has quite a few curved > tension models on his flickr site. In fact he's come up with some sort > of categorisation for the different folds. > http://www.flickr.com/photos/chengchit/920470628/in/photostream That was an early attempt of mine to categorise the folds for curved surfaces. The mathematician Gauss has categorised three fundamental curved surfaces - cylinder/cone, dome and saddle. The first is developable and the other two are not. I use a couplet or flange with a single cusp to simulate the dome and a couplet with double cusps to simulate the saddle. I avoid using the term "tension". This is because there will always be tension in the paper when you bend or fold it. Even a flat folded model would open into a 3D form, unless there are folds to lock it. The single and double cusp couplet folds are stable (in practice, relatively more stable). Cheng Chit
[Origami] Systematization attempt of Origami Art
>>> Hank Simon wrote: The traditional flapping bird generates a curved surface >>> by tension. >>> Cheng Chit answered: How does this come about? Since all the creases are >>> straight. The model is basically flat or can be flatten. I wasn't complete. When I pull the neck to flap the wings, that generates a curved surface. What I wanted to know in general, have you, Cheng Chit, or anyone generated a paper about how to do this with straight lines? Winnie Leung pointed to your categorizations: http://www.flickr.com/photos/chengchit/920470628/in/photostream but I couldn't tell if this was a list of the shapes, or a discussion? - Hank Simon
Re: [Origami] Systematization attempt of Origami Art
>>> Oksana Chorna wrote: Really, it is not correct to use term "Tachi's origami" for this type of origami. >> I was referring to Tachi's technique of folding (3D) closed polyhedral surfaces...and, there are other ways of folding closed polyhedral surfaces. Of course, all 3D models, closed or open surfaces, with straight creases can be flattened, without destructing their basic folding structures. I think Tachi's method is unique, both in approach and in style. A suitable comparison would be box pleating - in that box pleating uses a square grid to define the shape, as a kind of folding system or 'rule'. Tachi's software can calculate a foldable crease pattern for (any) geometric solid. The tucking fold he uses may not be a unique solution, but the method is distinct from other origami styles: 1) because the crease patterns tend to be organic and non-square, 2) there is no distinct base or set of flaps generated, 3) the tucking folds are the main folding technique and 4) the pattern is generated by an algorithm not by human intuition or other design method. I think Cheng Chit is correct in saying there are other methods for 3D polyhedral surfaces, however for Oksana's purpose of creating a system of origami styles, I would argue there is no other style equivalent to Tachi's, it is very distinct. Though the argument is clear that Tachi's Origami does not define a whole category of origami, rather it is a unique branch in the system. I find the system an interesting idea. Thanks for sharing it with us. - Matthew Gardiner
Re: [Origami] Systematization attempt of Origami Art
>>> Hank Simon wrote: The traditional flapping bird generates a curved surface by tension. How does this come about? Since all the creases are straight. The model is basically flat or can be flatten. Cheng Chit
Re: [Origami] Systematization attempt of Origami Art
>>> Oksana Chorna wrote: Really, it is not correct to use term "Tachi's origami" for this type of origami. I was referring to Tachi's technique of folding (3D) closed polyhedral surfaces...and, there are other ways of folding closed polyhedral surfaces. Of course, all 3D models, closed or open surfaces, with straight creases can be flattened, without destructing their basic folding structures. Models with intrinsic curved crease, on the other hand, cannot be flattened without destructing their basic folding structures. I hope I have used the "correct" terms to convey my ideas. Cheng Chit
Re: [Origami] Systematization attempt of Origami Art
Hank Simon wrote: Naive Question - The traditional flapping bird > generates a curved surface by tension. I'm sure there are others, but I > don't recall them. In Dr. Lang's Origami in Action there are numerous flapping and tension models including my personal favorite Randlett's Flapping Bird. When I make birds that flap, those are the ones I make.
Re: [Origami] Systematization attempt of Origami Art
>>> Hank Simon wrote: Naive Question - The traditional flapping bird generates a curved surface by tension. I'm sure there are others, but I don't recall them. Has anyone written a paper that categorizes this type of model with 'non-creased' curved surfaces ? [The flapping bird is an exception to this category, but the only example that comes immediately to mind. I think Jackson, Wu, and others may have static 'curved tension' models. In one of Paul Jackson's books, there is a Phillip Shen Pentagonal Flower, which uses tension to create petals that are slightly curved. Leong Cheng Chit also has quite a few curved tension models on his flickr site. In fact he's come up with some sort of categorisation for the different folds. http://www.flickr.com/photos/chengchit/920470628/in/photostream Winnie
Re: [Origami] Systematization attempt of Origami Art
On Sun, 02 Dec 2012 at 01:45, Leong Cheng Chit wrote about 3D Origami. Really, it is not correct to use term "Tachi's origami" for this type of origami. I hoped, the discussion on this problem will be took up. I know, Tomohiro Tachi uses term "3D Origami". On the other hand, this term was used to refer to other areas of origami. Ikuko Mitsuoko in the book "3d origami" used term to refer to Golden Venture Folding. This idea is very popular in Google. Moreover, term "3D Origami"is too common. It denote a certain effect in Modern Art and be used in different fields. http://www.boostinspiration.com/art/origami-3d-paper-art/ http://www.boostinspiration.com/art/3d-origami-animals-illustrations/ http://videohive.net/item/origami-3d-box-maker/237407 :) Also, this term can mean origami made from materials with 3d effects. Term "Tachi's origami" can not be applied. Instead, choose of the correct term is the right of folders in this field origami. Oksana Chorna
Re: [Origami] Systematization attempt of Origami Art
>>> Leong Cheng Chit wrote: 3D origami can be divided into 2 systems Naive Question - The traditional flapping bird generates a curved surface by tension. I'm sure there are others, but I don't recall them. Has anyone written a paper that categorizes this type of model with 'non-creased' curved surfaces ? [The flapping bird is an exception to this category, but the only example that comes immediately to mind. I think Jackson, Wu, and others may have static 'curved tension' models. - Hank Simon
Re: [Origami] Systematization attempt of Origami Art
On Sat, 01 Dec 2012 at 14:04:20, Tavins Origami wrote: > Is the blogpost the whole thesis? > > No, blogpost is a brief excerpt of the effective thesis. Whole thesis written in Ukrainian and not finished yet.
[Origami] Systematization attempt of Origami Art
Chorna's PhD's thesis is an impressive attempt at systematization of origami art. I do design 3D and also other systems of origami and would like to make the following comments on 3D origami for discussion. 3D origami can be divided into 2 systems - one with intrinsically straight creases and the other with intrinsically curved creases combined with or without straight creases. Each may have closed or open surfaces. With intrinsically straight creases and closed surface, we basically represent a curved (undevelopable) surface with a polyhedral one. The more facets we have, the closer the surface simulates the actual curved one. Besides Tachi's method, there are other ways of folding closed polyhedral models. Here are two of mine: http://www.flickr.com/photos/chengchit/8178246675/in/photostream http://www.flickr.com/photos/chengchit/6236286619/in/photostream Curved surfaces except conical ones are undevelopable but of course we can use curved creases to simulate curved surfaces. The surface of the model can also be closed or open. I have a paper "Simulation of Nonzero Gaussian Curvature in Origami by Curved-Crease Couplets" on this, published in Origami^5. The closed surface examples are: http://www.flickr.com/photos/chengchit/920489454/in/photostream http://www.flickr.com/photos/chengchit/920461244/in/photostream http://www.flickr.com/photos/chengchit/4202093599/in/photostream Robert Lang has his "flanged pots" which are also closed "conical section" surface. In my paper I call the flanges "couplets". The couplets as you can see are on the surface or on the other side of the surface. There are also models with couplets, where the features are defined by the (extrinsically) curved creases. These surfaces are open. Examples of these are: http://www.flickr.com/photos/chengchit/5441384165/in/photostream http://www.flickr.com/photos/chengchit/5210404627/in/photostream Cheng Chit
Re: [Origami] Systematization attempt of Origami Art
Am 30.11.2012 14:05, schrieb Оксана Чорна: > Dear O-list members, > > I have been working on the systematization of Origami Art for several years. > This is the subject of my PhD thesis. I would like to present you the results > of my work for discussion. > > > I just took a brief look at it and must say I find your work very interesting. Is the blogpost the whole thesis? all the best, Tavin
[Origami] Systematization attempt of Origami Art
Dear O-list members, I have been working on the systematization of Origami Art for several years. This is the subject of my PhD thesis. I would like to present you the results of my work for discussion. Postgraduate student of Kyiv National University of Culture and Art in the field of art criticism, O.S. Chorna Scientific Supervisor: L.M. Bilyakovych, Doctor of Philosophy in Technical Sciences, Professor of Apparel Design Department of Kyiv Nationl University of Culture and Art Origami as a modern art phenomenon: systematization attempt Annotation. In this article Origami is presented as a form of Art. Origami is placed into a modern Art system. Existing types of Origami are being examined in the article. There is systematization attempt of Origami Art. The criteria for the systematization are being proposed, such as content, functions, shaping technique, artistic expressiveness, and others like that. http://oksanachorna.wordpress.com/
